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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroenergia. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
25/09/2013 |
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Data da última atualização: |
21/09/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LAVIOLA, B. G.; OLIVEIRA, A. M. C. e.; BHERING, L. L.; ALVES, A. A.; ROCHA, R. B.; GOMES, B. E. L.; CRUZ, C. D. |
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Afiliação: |
BRUNO GALVEAS LAVIOLA, CNPAE; Ana Maria Cruz e Oliveira, Universidade Federal de Viçosa; Leonardo Lopes Bhering, Universidade Federal de Viçosa; ALEXANDRE ALONSO ALVES, CNPAE; RODRIGO BARROS ROCHA, CPAF-RO; Bruno Ermelindo Lopes Gomes, Universidade Federal de Viçosa; Cosme Damião Cruz, Universidade Federal de Viçosa. |
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Título: |
Estimates of repeatability coefficients and selection gains in Jatropha indicate that higher cumulative genetic gains can be obtained by relaxing the degree of certainty in predicting the best families. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Industrial Crops and Products, v. 51, p. 70-76, 2013. |
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DOI: |
10.1016/j.indcrop.2013.08.016 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to estimate the repeatability coefficient of grain production in Jatropha, theminimum number of measurements needed to reliably predict the genetic value of selected families, andto determine the cumulative genetic gains when considering the selection of the best families based ondifferent number of measurements. The experiment was conducted with 175 accessions (half-siblingsprogenies derived from selected plants in the field) that compose part of a germplasm collection. Suchbank was established in a randomized block design with two blocks. In each block a given accession wasrepresented in a 5 plant/plot scheme (half-siblings). For the analysis, yield data obtained in the yearsof 2009?2012 were considered. The results of this study indicate that the repeatability coefficient ofgrain production in Jatropha is low (0.37), but comparable to other perennial species, and that to achievereliabilities of 70 and 80% in the prediction of breeding values of selected families, 4 and 7 years ofevaluation, respectively, are needed. The results of this study also indicate that the efficiency of earlyselection seems to be small in Jatropha since the coincidence rate of selected genotypes at early age (1 or2 years of evaluation) and genotypes selected in adult age (4 years assessment) is small (17?23%). Finally,taking into account the repeatability coefficients and coefficients of determination, in a hypotheticalperiod of 21 years (which is equivalent to three selection cycles using seven consecutive measurements? R2= 80%), this paper demonstrates that higher cumulative genetic gains can be obtained (159% over108%) by relaxing the degree of certainty in predicting the best families (R2= 65% instead of R2= 80%),since it makes possible to perform a greater number of selection cycles in the same period (7 cyclesinstead of 4). MenosThe aim of this study was to estimate the repeatability coefficient of grain production in Jatropha, theminimum number of measurements needed to reliably predict the genetic value of selected families, andto determine the cumulative genetic gains when considering the selection of the best families based ondifferent number of measurements. The experiment was conducted with 175 accessions (half-siblingsprogenies derived from selected plants in the field) that compose part of a germplasm collection. Suchbank was established in a randomized block design with two blocks. In each block a given accession wasrepresented in a 5 plant/plot scheme (half-siblings). For the analysis, yield data obtained in the yearsof 2009?2012 were considered. The results of this study indicate that the repeatability coefficient ofgrain production in Jatropha is low (0.37), but comparable to other perennial species, and that to achievereliabilities of 70 and 80% in the prediction of breeding values of selected families, 4 and 7 years ofevaluation, respectively, are needed. The results of this study also indicate that the efficiency of earlyselection seems to be small in Jatropha since the coincidence rate of selected genotypes at early age (1 or2 years of evaluation) and genotypes selected in adult age (4 years assessment) is small (17?23%). Finally,taking into account the repeatability coefficients and coefficients of determination, in a hypotheticalperiod of 21 years (which is equivalent to three sele... Mostrar Tudo |
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Palavras-Chave: |
Crop energy; Jatropha curcas L; Selection. |
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Thesaurus Nal: |
biodiesel; plant breeding; quantitative genetics. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02788naa a2200277 a 4500
001 1967044
005 2017-09-21
008 2013 bl uuuu u00u1 u #d
024 7 $a10.1016/j.indcrop.2013.08.016$2DOI
100 1 $aLAVIOLA, B. G.
245 $aEstimates of repeatability coefficients and selection gains in Jatropha indicate that higher cumulative genetic gains can be obtained by relaxing the degree of certainty in predicting the best families.$h[electronic resource]
260 $c2013
520 $aThe aim of this study was to estimate the repeatability coefficient of grain production in Jatropha, theminimum number of measurements needed to reliably predict the genetic value of selected families, andto determine the cumulative genetic gains when considering the selection of the best families based ondifferent number of measurements. The experiment was conducted with 175 accessions (half-siblingsprogenies derived from selected plants in the field) that compose part of a germplasm collection. Suchbank was established in a randomized block design with two blocks. In each block a given accession wasrepresented in a 5 plant/plot scheme (half-siblings). For the analysis, yield data obtained in the yearsof 2009?2012 were considered. The results of this study indicate that the repeatability coefficient ofgrain production in Jatropha is low (0.37), but comparable to other perennial species, and that to achievereliabilities of 70 and 80% in the prediction of breeding values of selected families, 4 and 7 years ofevaluation, respectively, are needed. The results of this study also indicate that the efficiency of earlyselection seems to be small in Jatropha since the coincidence rate of selected genotypes at early age (1 or2 years of evaluation) and genotypes selected in adult age (4 years assessment) is small (17?23%). Finally,taking into account the repeatability coefficients and coefficients of determination, in a hypotheticalperiod of 21 years (which is equivalent to three selection cycles using seven consecutive measurements? R2= 80%), this paper demonstrates that higher cumulative genetic gains can be obtained (159% over108%) by relaxing the degree of certainty in predicting the best families (R2= 65% instead of R2= 80%),since it makes possible to perform a greater number of selection cycles in the same period (7 cyclesinstead of 4).
650 $abiodiesel
650 $aplant breeding
650 $aquantitative genetics
653 $aCrop energy
653 $aJatropha curcas L
653 $aSelection
700 1 $aOLIVEIRA, A. M. C. e.
700 1 $aBHERING, L. L.
700 1 $aALVES, A. A.
700 1 $aROCHA, R. B.
700 1 $aGOMES, B. E. L.
700 1 $aCRUZ, C. D.
773 $tIndustrial Crops and Products$gv. 51, p. 70-76, 2013.
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Registro original: |
Embrapa Agroenergia (CNPAE) |
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Tipo/Formato |
Classificação |
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Registro Completo
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Biblioteca(s): |
Embrapa Amapá. |
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Data corrente: |
28/11/2021 |
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Data da última atualização: |
28/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
COSTA, D. P. da; CASTILHO, C. de L.; SANTOS, U. R. A. dos; GEMAQUE, T. C.; DAMASCENO, L. F.; LIMA, J. de F.; MIRANDA FILHO, K. C. |
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Afiliação: |
DANIEL PEREIRA DA COSTA, UEAP; CLAUDIANA DE LIMA CASTILHO, UFRA; UCLÉDIA ROBERTA ALBERTO DOS SANTOS, UFSC; TAINÁRA CUNHA GEMAQUE, UFMG; LEANDRO FERNANDES DAMASCENO, CPAF-AP; JO DE FARIAS LIMA, CPAF-AP; KLEBER CAMPOS MIRANDA FILHO, UFMG. |
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Título: |
Effect of dietary carotenoids on reproducers of Amazon River prawn Macrobrachium amazonicum. Part 1: metabolism,morphometric / zootechnical indexes, body composition and gametes. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of Agricultural Studies, v. 9, n. 2, p. 32-56, 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
The inclusion of natural extracts and solution of synthetic astaxan thin in the Macrobrachium amazonicum diet w ere tested to verify their effect on performance, body indexes and total accumulation of astaxanthin in the reproductive tissues and gametes of this crustacean in comparison with newly captured wild animals. The e xperi ment was randomized in blocks (five treatments with three replicates). Four groups were submitted, during 20 days, to diets in recirculation tanks: control diet (CONT); diet containing natural extract of “buriti” (CAR); diet with inclusion of natural “uruc um” extract (BIXN), diet with syntheti c astaxanthin (ASTX) and NATURAL group (not fed with ration). 180 prawns were used, with 60 males (6.08±1.96 g) and 120 females (4.55±1.03 g) distributed in five groups containing four males and eight females each . The re were no significant differences in performance and body indexes. The number of released spermatozoids, live spermatozoids, body and egg pigmentation was higher in BIXN and ASTX treatments. The ASTX treatment was superior to the NATURAL group in the body pigmentation of females and eggs and release of spermatophores by males. These results demonstrate that the use of natural and artificial carotenoid pigments in the diet are beneficial for reproduction of M. amazonicum. |
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Palavras-Chave: |
Electroejaculation; Prawn culture. |
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Thesagro: |
Buriti; Urucum. |
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Thesaurus NAL: |
Astaxanthin; Reproductive performance. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/1136703/1/CPAF-AP-2021-Effect-of-dietary-carotenoids-part-1.pdf
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Marc: |
LEADER 02205naa a2200265 a 4500
001 2136703
005 2021-11-28
008 2021 bl uuuu u00u1 u #d
100 1 $aCOSTA, D. P. da
245 $aEffect of dietary carotenoids on reproducers of Amazon River prawn Macrobrachium amazonicum. Part 1$bmetabolism,morphometric / zootechnical indexes, body composition and gametes.$h[electronic resource]
260 $c2021
520 $aThe inclusion of natural extracts and solution of synthetic astaxan thin in the Macrobrachium amazonicum diet w ere tested to verify their effect on performance, body indexes and total accumulation of astaxanthin in the reproductive tissues and gametes of this crustacean in comparison with newly captured wild animals. The e xperi ment was randomized in blocks (five treatments with three replicates). Four groups were submitted, during 20 days, to diets in recirculation tanks: control diet (CONT); diet containing natural extract of “buriti” (CAR); diet with inclusion of natural “uruc um” extract (BIXN), diet with syntheti c astaxanthin (ASTX) and NATURAL group (not fed with ration). 180 prawns were used, with 60 males (6.08±1.96 g) and 120 females (4.55±1.03 g) distributed in five groups containing four males and eight females each . The re were no significant differences in performance and body indexes. The number of released spermatozoids, live spermatozoids, body and egg pigmentation was higher in BIXN and ASTX treatments. The ASTX treatment was superior to the NATURAL group in the body pigmentation of females and eggs and release of spermatophores by males. These results demonstrate that the use of natural and artificial carotenoid pigments in the diet are beneficial for reproduction of M. amazonicum.
650 $aAstaxanthin
650 $aReproductive performance
650 $aBuriti
650 $aUrucum
653 $aElectroejaculation
653 $aPrawn culture
700 1 $aCASTILHO, C. de L.
700 1 $aSANTOS, U. R. A. dos
700 1 $aGEMAQUE, T. C.
700 1 $aDAMASCENO, L. F.
700 1 $aLIMA, J. de F.
700 1 $aMIRANDA FILHO, K. C.
773 $tJournal of Agricultural Studies$gv. 9, n. 2, p. 32-56, 2021.
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Embrapa Amapá (CPAF-AP) |
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